Anyone have information on Torque curve on these engines? I'm looking at changing gear ratios, i want to make sure I try to optimize torque/hp so I don't under gear (poor performance) or over Gear it(worse gas mileage)
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10-29-2012
Anyone have information on Torque curve on these engines? I'm looking at changing gear ratios, i want to make sure I try to optimize torque/hp so I don't under gear (poor performance) or over Gear it(worse gas mileage)
10-29-2012
How are you going to tune it for those changes?
A good guess would say your powerband is 2500-5000ish rpm an faills off before it shifts. You should just leave it.
02-28-2013
i would agree with five finger death punch... if you want to mess with gears your better off getting a manual trans. which its not worth it unless you got some serious mods in the engine.
03-02-2013
since this thread got bumped....these 3.4 dohc engines make good use of the upper powerband.
a guy on here had 3.69's? i think? and he absolutely loved them with this engine.
03-04-2013
3.69? Came with factory 3:43. Wonder how he got to 3:69?
02-07-2014
U get 3.69 by using a final drive from a 3100 v6 car with a 4t60e. And he also used a 245/45r17 tire and ended up with a ratio of 3.73. The guy I know that has done it is z34phoenix. He is on wbody forum a lot. I also have done the diff swap to 3.69 but my car isn't driving until the snow clears so I don't have any opinion on it
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02-11-2014
no actually when you install the 3100 final drive you end up with 3.73's using my 245/45-17 tires the final drive would be equivalent to 4.09
02-26-2016
My SPI includes FV0 RATIO, TRANSAXLE FINAL DRIVE 3.67
08-08-2017
3:69? Wow, and I thought I loved the 3:43. Reprogramissues?
08-08-2017
Just used a DHP power tuner and then remapped the shift points. Needed a special release of the dhp software. The latest release doesn't have the settings needed for the 96 z34
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